. >> nasa now thinks that mars was once capable of supporting a very simple life forms. the discovery was made by the mars rover, which ride on the red planet back in august. kron fours charles clifford has more. >> at the moment the rover is sitting on the northern edge of the crater in what is believed to be an agent stream. there are a variety of scientific instruments on the rover they are using them to drill into martian rocks and analyze the results. what they found it so far, niger, hydrogen, fosters, and carbon the basic chemical building blocks of life as we know it. --phosphorus this indicates someone the distant past millions of years ago this area was covered in water. the water was probably fresh not too salty or acidic. that means that life could have survived here. there are traces of sulfate and sulfites a possible food source of the microbes. >> this was a cajun and by rode with the right elements. minerals indicating a near neutral environment and slightly salty liquid water. >> all of the prerequisites to support life. these discoveries mean that life